Armstrong Consultants: an established consultancy offering:

Module, subassembly, or complete electronics system design, from assisting
with initial specification through circuit design, pcb design, to production
documentation, test fixtures and writing the press release or article for
the intranet site.

General technical writing, including user manuals, service manuals, press
releases etc. Technical consultancy for general and specialist electronics
media.

Recent work includes:

Keyless entry system. Design and prototyping of 315 and 433.92 MHz rf subsystems.
End-client's keyfob case required to have much chrome plated brass, with 20
to 25dB attenuation depending on antenna configuration, but only space for
a 60mAH lithium cell. The specification was for a range of 20M. The units
work and have passed approvals.

Design of 700W power factor correcting pre-regulator, incorporating ZVT
techniques, for a military battery charger. Also design of charger output
modules for this project.

Miscellaneous troubleshooting, for example the layout of a crowded
4 layer pcb that had defeated two previous consultants.

Examples of previous projects:

Design of modules for a self-service library book issue/return terminal
for a library automation company.

Consultant working with technical director and chief engineer to develop
a patented security target conditioner for library use.

Project management for the design and installation of a bespoke laboratory
data gathering system for a major air conditioning company.